The 9V battery will cause electrons or current to flow
through the wire. At the same time the resistance or resistor will
slow down the movement of electrons or decrease current.
Voltage, resistance, and current are related by:
V / R = I. Take your calculator and do the following:
You have just found the amount of current in the wire. This will be the amount of current
in the wire and the resistor. Electrons will slow down all around the circle.